“A bridge that defies gravity,” a passerby once remarked. It’s true, the William Jolly Bridge, with its arches seemingly pushing through the roadway, appears to defy conventional bridge design. This magnificent structure, spanning the Brisbane River, is more than just a way to get from point A to point B. The William Jolly Bridge is an iconic landmark steeped in history and a testament to the ambition of early Brisbane. Built during the depths of the Great Depression, it was a symbol of hope and progress for the newly unified city. Originally called the Grey Street Bridge, it was renamed in 1955 to honor William Jolly, the visionary first Lord Mayor of Greater Brisbane. He championed the bridge’s construction to alleviate traffic on the then-only bridge, the Victoria Bridge.
The William Jolly Bridge’s design is not just aesthetically pleasing, it’s groundbreaking. Its three major arched ribs, pushing through the roadway, are a rare feature, setting it apart from bridges like the Sydney Harbour Bridge. The concrete encasing the steel structure isn’t just for looks. It’s an integral part of the bridge’s strength, making it a pioneer in reinforced concrete bridge design in Australia. This innovative design was born out of necessity. The deep rock bed of the Brisbane River posed a challenge, demanding a bridge with long spans and incredibly strong foundations.
Engineer Harding Frew rose to the challenge, employing a revolutionary technique called the “Sand Island method” to build the bridge’s piers. This ingenious method, conceived at 3 am by contractor Manuel Hornibrook, involved creating artificial islands in the river to access the deep riverbed. The William Jolly Bridge stands as a reminder of human ingenuity, a monument to those who dared to dream big, even during the toughest of times. As you cross this architectural marvel, take a moment to appreciate the stories etched into its concrete and steel. Feel the echoes of history beneath your feet and marvel at the enduring spirit of Brisbane.